[Shinogiri Zun] Mermaid's Castle (Monster Shoujo to no Chijou) [Decensored] [q91]

A soft-bodied boy in a loose dress is the only soul his dwindling village can spare, sent up the mountain to beg a mermaid for the return of every man who never came home. She's a former Mountain God with heavy bare breasts, pointed ears, and scales flaring at her hips, and she cheerfully admits she ate them all before pinning the trembling boy beneath her instead. Her slick mucus burns like an aphrodisiac, swelling his cock hard against his will until his body moves on its own, and she rides him raw, demanding he seed her and sire for the mermaids whether he wants to or not.